wish to learn microcontroller....... need your help

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Try this little bit of code for starters
 

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i'm not understand this....
You need to toggle P2.0 by inserting directly into the SFR window at
the bottom of the screen
Click to expand...




I wrote the program in the simulator...

yes. it's working. LEDs are blinking......
 
Last edited:
Ian Rogers said:
Try this little bit of code for starters
Click to expand...

That was a nice tutorial for beginner. Are you going to add in lessons and chapters as time goes on and publish it as a full tutorial ?

I don't mind to become another beginner to relearn 8051 from fresh as I have forgotten most of them already. My old 8051 board has a monitor program inside and communicate with the PC via COM port. I used the ASM51 and MSKermit to talk to the 8051 board.

Allen
 
I think ( Its my opinion ) that the paged memory is the biggest issue on the PIC.. ( I'm talking mainly about the 8 bit systems)
Click to expand...

Im with you there Ian, The paged memory is my biggest gripe about the PIC's
 

I have done one for the PIC using MPLAB... I will do a tutorial eventually if its what people want..
 
Oh good... Tell me what you want to do next... I'll try and give you a lift up!!
 
Bit addressable are SFR's locatioons 0x80 to 0xF0 and a small 16 byte memory locations 0x20 to 0x2F.

Bit access is great for boolean flags on/off variables..

Code: 
flags equ 0x20

   setb   flags.0 ; access bit 0 of the flags variable
 
plz correct me :

Code: 
setb  24h
does that mean if I write this, the value of 24h is becomes 1 (high). and if I can access this 24h to the pin of micro P1.0 then the value of the P1.0 becomes . Am I right????
 
Bit addressable are SFR's locatioons 0x80 to 0xF0
Click to expand...
what does it mean by? truly I'm really can't understand this... As far as I know the bit addressable memory and the SFR has their own different locations.. some registers are bit addressable?????????
im totaly lost here......
 
Bit addressing only means you can access a single bit in a byte

ie...

Code: 
flag   equ   24
   mov   flag,#0xFF   ; move 0xFF into flags <<-- byte addressing
   clr    flag     ; clear flags
   setb   flag.1   ;  set bit 1 in flags <<-- Bit addressing
 
I want to make lighten up 8 LEDs in different way. And also want to understand the CODE/Program, how it works... thanks in advanced....
 
Make a little stripboard or breadboard with 8 LED's on and 8 270Ω resistors and connect it to the port of your choice.... P1 is favorite..

We can make the code once you have everything...
 
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